The Effect of Structural Leg Length Discrepancy on Vertical Ground Reaction Force and Spatial-Temporal Gait Parameter: A Pilot Study
Keywords:Gait Analysis, Kinetics, Leg Length Discrepancy, Spatial-Temporal Parameter, Vertical Ground Reaction Force,
AbstractNumerous studies have established the correlation between weight distributions, vertical ground reaction force (VGRF) and temporal gait parameter with a certain level of magnitude LLD. However, very little descriptive data exists to relate to stability during walking gait. Moreover, there is no analysis of the same groups of subjects for the different aspects disorder. Therefore, this paper presents to investigate the influence of LLD on vertical ground reaction force (VGRF) and spatial-temporal gait parameter. VGRF and spatial-temporal gait parameter data were collected after they performed under two conditions: (1) Healthy subject as a mimic of LLD wearing a flat thin sandal with a thin flat insole from 0.5 cm to 4 cm, and (2) Patient with LLD (2 cm). In both (2 cm) true patient LLD and mimic of LLD shows the same pattern of weight distribution. The largest root means square (RMS) VGRF occurred at 2 cm LLD (515.47). A spatial, temporal parameter which is step length have observed the short leg about 9.4% and step time was 17.8% at 3.5 cm LLD. Mild leg length discrepancy affects the entire of kinetic (VGRF) and spatial-temporal gait during walking gait. Increasing load on the short leg, which helps us to explain why a mild leg length discrepancy where the primary impact on stability and limitation in physical ambulation.
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